To be clear, I am not mocking you - your description of your early DMing sounds like you took to it easily. But given the dearth of DMs, I don't think we should be making it harder to people to take it up and learn. Not everyone is a natural storyteller, or easily runs groups and describes settings; for many people, it is an acquired skill, and those boxed descriptions provides that bit of confidence to get them going and lets them more easily focus on other parts of DMing when they are learning.